Great add-on! I think Rodrigo's and Klud's shaders should be included as default for every upcoming patch :)

One minor observation regarding the craters: Although smooth crater edges are more realistic on planets with atmospheres, they would look unnatural on airless selenas because there is no erosion at 0 atm. It would be great if there could be an equation in the shader file where one variable is atm pressure and the derivative is degree of erosion in crater edge. As atm pressure increases so smoothness of crater edge increases. I have no clue however as to how this can be implemented :'(

PS: One can argue however that there could be errosion in airless bodies due to tectonic activity - I haven't thought of that

On the bodies without atmosphere there is "thermal erosion" (with large fluctuations in temperature, because of this very hot rocks, first, and then, when cooled, cracked and broken) and the impact of micrometeorites.It destroys relief.

On the bodies without atmosphere there is "thermal erosion" (with large fluctuations in temperature, because of this very hot rocks, first, and then, when cooled, cracked and broken) and the impact of micrometeorites.It destroys relief.

Never thought about how much thermal erosion affects the surface of an airless planet. Makes perfect sense. Can't wait to install your shaders